This is the 6962nd most frequent Polish word.
grabowska
"Grabowska" is a Polish surname, typically meaning "from Grabów" or related to a place named Grabów.
The word 'Grabowska' is a surname and functions here as a last name referenced in the feminine form, reflecting etiquette and respect.
Pani Grabowska jest nauczycielką.
Ms. Grabowska is a teacher.
Here, 'Grabowska' is again a surname, used in a possessive sense to indicate authorship, appropriate for formal identification of individuals.
Ta książka była napisana przez Annę Grabowską.
This book was written by Anna Grabowska.
In this sentence, 'Grabowska' identifies a person, again emphasizing its use as a surname and demonstrating the Polish linguistic norm of gendered surnames.